A pub landlord is shutting up for the night when there is a knock at the door. When he answers, a tramp asks him for a tooth-pick. He gives him the toothpick and the tramp goes off. A few minutes later there is a second knock. When the landlord answers, there is a second tramp who also asks for a toothpick. He gets his toothpick and the tramp goes off. There is a third knock at the door, and a third tramp. The landlord says, “Don’t tell me, you want a toothpick too.”
“No, a straw,” says the third tramp.
The landlord gives him a straw but is curious as to why he wants it, so he asks the tramp why he wants a straw and not a toothpick. To which the tramp replies “Some bloke just threw up outside but all the good stuff’s gone already.”